Cash Flow Information (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Cash and Cash Equivalents [Line Items]
Increase (decrease) in PP&E related to an increase (decrease) in asset retirement obligations	$ 727	$ 825	$ 442
Fair value of contingent consideration on acquisition	320
Interest	701	873	924
Income taxes	5,406	7,368	856
Short-term investments purchased	(1,463)	(5,046)	(5,554)
Short-term investments sold	3,574	3,102	8,810
Investments and long-term receivables purchased	(867)	(775)	(279)
Investments and long-term receivables sold	129	90	114
Net Sales (Purchases) of Investments	$ 1,373	$ (2,629)	$ 3,091

Noncash Or Part Noncash Acquisition, Contingent Consideration Liability

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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The increase (decrease) during the reporting period in the carrying amount of asset retirement obligations.

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Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

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The net cash paid (received) associated with the acquisition or disposal of all investments, including securities and other assets.

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The cash outflow for securities or other assets acquired, which qualify for treatment as an investing activity and are to be liquidated, if necessary, beyond the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the long-term.

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The cash outflow for securities or other assets acquired, which qualify for treatment as an investing activity and are to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term.

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The cash inflow from sales of all investments, including securities and other assets, having ready marketability and intended by management to be liquidated, if necessary, beyond the current operating cycle.

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